[Mesa-users] cannot get hardware acceleration on old notebook

[Tormod Volden]

On Fri, Oct 5, 2012 at 12:37 PM,  <junk_yard at aol.com> wrote:
> $ egrep VBE /var/log/Xorg.0.log
> [    43.117] (II) MACH64(0): VESA VBE Version 2.0
> [    43.117] (II) MACH64(0): VESA VBE Total Mem: 4096 kB
> [    43.117] (II) MACH64(0): VESA VBE OEM: ATI MACH64
> [    43.117] (II) MACH64(0): VESA VBE OEM Software Rev: 1.0
> [    43.117] (II) MACH64(0): VESA VBE OEM Vendor: ATI Technologies Inc.
> [    43.117] (II) MACH64(0): VESA VBE OEM Product: MACH64RM
> [    43.118] (II) MACH64(0): VESA VBE OEM Product Rev: 01.00
> [    43.122] (II) MACH64(0): VESA VBE DDC supported
> [    43.122] (II) MACH64(0): VESA VBE DDC Level none
> [    43.122] (II) MACH64(0): VESA VBE DDC transfer in appr. 2 sec.
> [    43.126] (II) MACH64(0): VESA VBE DDC read failed
>
> the native resolution is 1024x768, but even if i change the bit depth from
> 24 to 16, i get
>
> MACH64(0): DRI static buffer allocation failed -- need at least 4608 kB
> video memory
>
> is there a way to get a hardware acceleration in my case?
>

If you can use the r128 DRI driver, this might help you:

http://phoronix.com/forums/showthread.php?70813-DRI1-drivers-for-Ubuntu-12-04-%28savage-mga-r128-tdfx-sis-unichrome%29

If you need the mach64 DRI driver it is more complicated because the
mach64 DRM kernel module never got into the kernel proper and
distributions rarely shipped it, as far as I can remember. See also
http://dri.freedesktop.org/wiki/ATIMach64

Anyway, to use DRI you'll need enough video RAM for (number of pixels
* bytes per pixel * 3) so it won't work on 1024x768 at 16 bit. 800x600
should work though.

Cheers,
Tormod